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A117250 as a simple table

na(n)
01
11
21
3-1
42
51
64
7-4
84
91
10-40
1132
12-16
138
141
15896
16-640
17256
18-64
1916
201
21-43008
2228672
23-10240
242048
25-256
2632
271
284325376
29-2752512
30917504
31-163840
3216384
33-1024
3464
351
36-899678208
37553648128
38-176160768
3929360128
40-2621440
41131072
42-4096
43128
441

[1,1,1,-1,2,1,4,-4,4,1,-40,32,-16,8,1,896,-640,
 256,-64,16,1,-43008,28672,-10240,2048,-256,32,1,
 4325376,-2752512,917504,-163840,16384,-1024,64,1,
 -899678208,553648128,-176160768,29360128,-2621440,
 131072,-4096,128,1]